Cometic Gasket MLX LHS Head Gasket

2011–2026 Chrysler, Dodge, Jeep, Ram 6.4L 392 & 6.4L SRT8

Part #: C15173-054

Overview

The Cometic MLX LHS Head Gasket is a premium sealing solution designed specifically for high-performance 6.4L 392 and 6.4L SRT8 engines found in Chrysler, Dodge, Jeep, and Ram vehicles from 2011 through 2026. Engineered to meet the rigorous demands of modern muscle cars, trucks, and SUVs, this gasket ensures a reliable, leak-free seal between the cylinder head and engine block. Ideal for enthusiasts and professional builders alike, it supports both street and track applications by maintaining optimal compression and durability under extreme conditions.

Whether you're upgrading your Chrysler 300, Dodge Challenger, Jeep Grand Cherokee, or Ram 2500/3500, the Cometic MLX LHS Head Gasket offers a direct fit with precise bore and thickness specifications to maintain engine integrity and performance.

Key Features

Built with advanced materials and manufacturing techniques, the Cometic MLX LHS Head Gasket delivers superior sealing performance and longevity. Key features include:

• Exact 4.150" bore diameter and .054" thickness for precise engine fitment
• Reinforced multi-layer steel (MLS) construction for enhanced durability and sealing strength
• Armor-clad and galvanized steel layers to resist corrosion and withstand high cylinder pressures
• Compatibility with a wide range of 6.4L 392 and 6.4L SRT8 engines across multiple Chrysler, Dodge, Jeep, and Ram models
• Superior tensile and yield strength to prevent gasket failure under extreme thermal and mechanical stress
• Designed to seal irregular surfaces and maintain compression in high-performance and heavy-duty applications
• Manufactured using advanced processes to ensure consistent quality and reliability

Construction & Design

The Cometic MLX LHS Head Gasket features a multi-layer steel design that combines copper, aluminum, and stainless steel alloys selected for their corrosion resistance and mechanical properties. This layered construction provides a robust seal capable of handling the high combustion pressures and temperatures typical of 6.4L HEMI engines. The gasket’s armor-clad and galvanized steel layers enhance its ability to conform to surface imperfections, ensuring a leak-free seal over extended use.

Cometic’s precision manufacturing process guarantees tight tolerances and consistent thickness, critical for maintaining proper engine compression and preventing head gasket failure. This gasket is engineered to meet the demands of both OEM replacement and high-performance rebuilds.

Installation & Fitment

The Cometic MLX LHS Head Gasket is designed for direct fitment on 6.4L 392 and 6.4L SRT8 engines installed in the following vehicles:

• 2011–2014 Chrysler 300 6.4L 392
• 2015–2024 Chrysler 300 6.4L 392
• 2011–2014 Dodge Challenger 6.4L 392
• 2015–2023 Dodge Challenger 6.4L 392
• 2011–2014 Dodge Charger 6.4L 392
• 2015–2023 Dodge Charger 6.4L 392
• 2011–2018 Ram 2500 6.4L 392
• 2019–2026 Ram 2500 6.4L 392
• 2011–2018 Ram 3500 6.4L 392
• 2019–2026 Ram 3500 6.4L 392
• 2011–2021 Jeep Grand Cherokee 6.4L SRT8
• 2012–2025 Dodge Durango 6.4L 392
• 2018–2026 Jeep Wrangler 6.4L 392

Installation requires standard head gasket replacement procedures and should be performed by a qualified technician to ensure proper torque specifications and surface preparation. No modifications are necessary for direct bolt-on fitment in the listed vehicles.

What's Included

• One Cometic MLX LHS Head Gasket (4.150" Bore, .054" Thickness)

Ideal For

This head gasket is ideal for automotive enthusiasts, professional engine builders, and mechanics seeking a reliable, high-quality sealing solution for 6.4L HEMI engines. It is perfectly suited for performance upgrades, engine rebuilds, and heavy-duty applications where durability and leak prevention are critical. Whether restoring a classic muscle car or maintaining a modern high-performance truck or SUV, the Cometic MLX LHS Head Gasket delivers dependable performance and peace of mind.

Cometic Gasket supplies high-performance sealing solutions for motorsports and high-stress engine builds, with a strong focus on modern gasket materials like multi-layer steel (MLS) head gaskets. Their catalog spans head gaskets and complete gasket sets across a wide range of applications, helping builders maintain reliable combustion and fluid sealing under extreme pressure and heat.